Showing papers by "Swades De published in 2004"
TL;DR: Three competitive deterministic topologies are evaluated along with the random topology in terms of link-level and network-level (routing) performance and the impact of signature code length and receiver design on the network performance for different topologies is studied.
Abstract: In this paper, we characterize analytically the multiaccess interference in wireless code-division multiple-access sensor networks with uniformly random distributed nodes and study the tradeoff between interference and connectivity. To provide a guideline for improving system behavior, three competitive deterministic topologies are evaluated along with the random topology in terms of link-level and network-level (routing) performance. The impact of signature code length and receiver design on the network performance for different topologies is also studied.
99 citations
21 Mar 2004
TL;DR: A novel hybrid packet forwarding scheme is introduced that takes advantage of more uniform load distribution of SRF and a higher end-to-end throughput of SPF and is guided by analytic intuition and verified by simulations.
Abstract: In this paper we investigate the relative performance of two multipath routing schemes in relatively static and highly error-prone wireless networks (e-g., sensor networks), namely, selective preferential forwarding (SPF) (or primary/secondary routing) and recently proposed selective random forwarding (SRF), in terms of their packet throughput and traffic load distribution. For meshed multipath, aiming at achieving a good performance trade-off, we introduce a novel hybrid packet forwarding scheme that takes advantage of more uniform load distribution of SRF and a higher end-to-end throughput of SPF. Our approach is guided by analytic intuition and verified by simulations.
19 citations
25 Oct 2004
TL;DR: The idea of managed mobility proposed in this paper for the iCAR system as well as the mobility management strategies may also be applied in other ad hoc networks, such as the self-reconfigurable sensor network, to reduce additional node deployment cost and increase fault tolerance.
Abstract: We have introduced a novel concept called "managed mobility", and addressed the mobility of the relaying devices called mobile ad hoc relaying stations (MARSs) in the integrated cellular and ad hoc relaying (iCAR) system. We anticipate that the idea of managed mobility proposed in this paper for the iCAR system as well as the mobility management strategies may also be applied in other ad hoc networks, such as the self-reconfigurable sensor network, to reduce additional node deployment cost and increase fault tolerance.
14 citations
07 Mar 2004
TL;DR: Three competitive deterministic topologies are evaluated along with the random topology in terms of link-level and network-level (routing) performance and the impact of the signature code length and the receiver design on network performance for different topologies is studied.
Abstract: In this paper, we characterize analytically the multiaccess interference (MAI) in wireless CDMA sensor networks with uniformly random distributed nodes and study the tradeoff between interference and connectivity. To provide a guideline for improving system behavior, three competitive deterministic topologies are evaluated along with the random topology in terms of link-level and network-level (routing) performance. The impact of the signature code length and the receiver design on network performance for different topologies is also studied.
13 citations